curl --request POST \
  --url https://api2.rhombussystems.com/api/internal/sendShipmentShippedEmail \
  --header 'Content-Type: application/json' \
  --header 'x-auth-apikey: <api-key>' \
  --header 'x-auth-scheme: <x-auth-scheme>' \
  --data '
{
  "salesforceOppId": "0061234567890ABC"
}
'

{
  "error": true,
  "errorMsg": "<string>",
  "legacyMsg": "Shipment has been processed",
  "trackingIdentifier": "1Z999AA1234567890",
  "warningMsg": "<string>"
}